Glazier&#39;s hammer.



No. 703,790. Patented July 1,1902.

D. M. HUMISTON.

GLAZIERS HAMMER.-

(Application filed Sept. 26, 1901.) a

(No Model.)

UNITED STATES PATENT OFFICE.

.DAYVSON M. HUMISTON, OF TONICA, ILLINOIS.

GLA'ZIERS HAMMER.

SPECIFICATION forming part Of Letters I'atent NO. 703,790, dated. July 1, 1902.

Application filed September 26,1901. Serial No. 76,714. (No model.)

To all whom it may concern:

Be it known that I, DAwsoN M. HUMIsTON, a citizen of the United States, residing at T0- nica, in the county of La Salle and State of Illinois, haveinvented certain new and useful Improvements in Glaziers Hammers; and I do hereby declare the following to be a full,

clear, and exact description of theinvention,

a tool by which to force the pane of glass to position should it bind in the sash and to drive the brads or points, so-called,by which the glass is held until securedibyputty.

Figure 1 is a side elevation of the improved hammer, showing in dotted lines the parallel position of head with handle. Fig. 2 is a plan of the hammer. Fig. 3 is a face view of the hammer with handle partly broken away. Fig. at is a broken end viewof hammer-head enlarged. Fig. 5 isa broken edge view of the hammer-head enlarged. Fig. 6 is a perspective showing the general relation of the hammer to the point or brad in driving, the inclination of the handle being somewhat exaggerated.

The hammer-head 1, as shown, is a rectangular block of metal, having a generally flat rim 2 around its face, but recessed at its centralportion 3, so-that the recess incloses a body of air and forms an air-cushion to protect the glass from breakage when the hammer is dropped or falls quickly on a pane of glass.

Two ears or lugs at at project from the back of the head, and a hole 5 is bored through these lugs in direction parallel with the plane of the face of the hammer.

Ahandle-bar 6 has its end 7, as shown, pro- I vided with a fork, and this forked end fits between the lugs 4: 4c of the hammer-head. The end 8 of the handlebar or the forked tines thereof should be beveled at about an angle gagement with the beveled end of the handlebar, as shown in full lines in the same figure.

A sleeve 11 may surroundthe pin 10 be- ;tween the forked tines of the handle-bar.

The particular manner of pivoting the head to the handle-bar, however, is not considered very important. The essential idea is that the head is pivotally connected to the handle preferably about opposite the center of grav ity of the head, so that the head will be balanced and tend to remain in any position to which it may be turned on-v its pivot and that the pivotal movement of the head be limited in both directions about as stated.

The polygonal head has straight sides, and these sides are grooved near the bottom edge, the grooves running parallel with the plane of the face. The grooves or rabbets 13 are for the purpose of holding down glaziers points or triangular brads of sheet metal. The body of the hammer-head thus slightly overhangs the brads when the brads lie flat on the glass, and the hammer slides along on the surface of the glass to drive such brads into the sash.

The handle-bar 6, as illustrated, tapers to a thin edge 15, the bar preferably having the outer edges parallel. This edgeforrns avery efficient tool for keying up-that is, forcto bind;

A wooden or other suitable handpiece 16 is applied tothe handle-bar andsecured thereonby the close fit of the perforated handpiece to the tapered bar or inother suitable manner. .The rounded end 17 of this handpiece is toward the point or edge 15 of the handle-bar. Said point or edge projects, say, about one and one-halfinches from the round= ed end of the handpiece, and'this'rounded end formsa convenient fulcrum when the end or point 15 is used as a lever.

The hammer is used in driving glaziers brads or points by placing the face of the hammer-head flat on the pane of glass, on which the points or triangular brads of. sheet metal also lie fiat. The handle is held at such convenient angle as permits free movement of the hand. With a sliding blow the brads or points are driven into the sash or sash-bar,

the rabbet or overhang preventing the rise of the outer end of the point or brad when it is struck by the hammer. The direction of the blow is sidewise with reference to the hammer-head, and a blow can be struck in either direction-that is,with either side of the hammer.

The straight side of the ham mer-head when it bears against the triangular brad or point lying on the face of the pane of glass causes the point to assume the proper position so that its sharp end is presented directly to the sash or sash-bar, and by a light sliding blow from the hammer-head the said point or brad is driven into the sash, lying snugly against the glass.

What I claim is 1. A glaziers hammer having a head with straight sides, and a handle pivoted to said head, the pivotal movement of the head relatively to the handle being limited in both directions by engagement of the parts.

2. A glaziers hammer having a handle and a head with a straight side, the side having a groove parallel with and near to the face.

A glaziers hammer having a handle and a head with a rim in a plane around its face, and a recess or air-cushion inside said rim, substantially as described.

at. A glaziers hammer havinga head poly onal in outline, a handle pivotally connected to the back of said head, means for limiting the pivotal movement of the head relatively to the handle, and grooves in the sides of said head.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DAWSON. M. HUMISTON. Witnesses:

A. E. I-IUMIsToN, G. A. McFERsoN. 

